Wolf Tooth headsets are machined in Wolf Tooth’s Minnesota shop with aircraft-grade 6061-T6 aluminum. They are designed to be lightweight, strong, and durable. Wolf Tooth’s headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. This has a stack height of 3mm and is available in a variety of colors to match other Wolf Tooth anodized color options. These IS headsets are made exclusively for Specialized frames with molded-in internal bearing cups. Like all Wolf Tooth Premium Headsets with Enduro stainless steel bearings, the Premium IS Headset for Specialized has a lifetime warranty.

Compatibility:

Any Specialized bike that uses an IS (Integrated Standard) headset with 42mm upper bearing diameter. Uppers and lowers sold separately. Enduro stainless steel sealed bearings included on both the upper and lower. Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately). (Never use a star nut on a carbon steerer tube). Some bikes, like the Stumpjumper EVO, have an adjustable headset that resembles a ZS headset where an upper cup is pressed into the frame. Wolf Tooth’s bearing will fit into that cup and Wolf Tooth’s top cap will fit neatly on top. Measuring to determine compatibility with your Specialized frame

Disassemble the headset, remove upper bearing from the frame. Use the depth blade on a caliper to measure from the top of the headtube to the corner where the 45 taper starts.

Compatible Specialized Bike Models:

Aluminum Mountain Bikes (except pre-2017 Chisel HT aluminum):

Camber Carbon | 2014 Chisel Alloy HT (Smartweld HT) | 2017-2021 Enduro 29 Carbon | 2014 Enduro Carbon | 2017, 2020 Epic Carbon | 2014 Epic FSR | 2021 Epic FSR Carbon | 2018 Epic HT | 2017, 2020 Fatboy Carbon | 2015 Fuse Carbon | 2017 Stumpjumper | 2021 Stumpjumper Carbon | 2019 Stumpjumper EVO | 2021 Stumpjumper FSR Carbon

Upper assembly features:

Ultralight Stem Cap with 5mm Integrated Spacer plus an aluminum bolt and a star nut. One 3mm stack height top cover option. O-ring seal prevents water intrusion around steerer tube. Custom-molded upper lip seal provides additional protection for upper bearing.

recommendations:

The Wolf Tooth crown race installation adapter will help avoid damaging the crown race seals.

Wolf Tooth crown race installation adapter.

Performance IS Headsets.

Tech Specs:

Weight: 3mm 43g

Material: 6061 aluminum

Stem Cap Bolt Torque Spec: 2-3 Nm with light grease on threads only

Made in the USA